An information processing system that includes at least one information processing apparatus and executes programs, each of which performs a predetermined process, the information processing system including a memory unit configured to store, for each of applications performing a sequence of processes using electronic data, program identification information identifying at least one program performing each process of the sequence of processes, flow information defining an execution order of the at least one program, and app identification information identifying each of the applications, while associating the program identification information, the flow information, and the app identification information, a registering unit, and a process executing unit, in receipt of a request including information related to the electronic data and the app identification information from a second apparatus, configured to cause the program identified by the program identification information in accordance with the execution order defined in the flow information.